CN205045695U - A special lifting device for hoisting radio telescope plane of reflection unit - Google Patents

Abstract

The utility model discloses a special sling for hoisting a radio telescope reflector unit, and relates to the technical field of installation of a radio telescope reflector unit. Each boom of the special sling is provided with a position-adjustable guide Pulleys, one end of the two wire ropes is connected to a remote control winch, and the other end goes around the corresponding guide pulley; one end of the remaining wire rope is connected to the hanger, and the other end goes around the corresponding guide pulley, and each wire rope is tied with Universal hanging claw. The utility model can adapt to the hoisting requirements of reflective surface units of different sizes, and improves construction efficiency.

Description

Special spreader for hoisting reflector unit of radio telescope

technical field

The utility model relates to the technical field of installation of a radio telescope reflector unit, in particular to a special sling used for hoisting a radio telescope reflector unit.

Background technique

The active reflector of the radio telescope installed this time is a spherical crown surface composed of 4,450 reflector units. Each reflector unit is a space grid structure with a triangular cross-section. The height of the reflector unit is about 1.3m. RMS≤2.5mm, the side length of the cross section is 10.4~12.4m.

When installing a radio telescope, it is necessary to use a sling to hoist the reflector unit to the corresponding position on the cable net of the radio telescope and fix it. When all the reflector units are installed in place, the active reflector of the radio telescope will be formed. Among them, the reflector The three endpoints of the unit are node 0, node 1 and node 2 respectively. These three nodes are the fixed connection points between the reflector unit and the connection plate on the cable net of the radio telescope, and are also the lifting points when hoisting the reflector unit.

Although there are many kinds of slings used for hoisting reflector units, each sling can only lift reflector units of a certain size. At present, the sizes of reflector units of radio telescopes are different, and there are as many as 186 types of external dimensions. , therefore, when installing a radio telescope, the spreader needs to be replaced frequently, resulting in low construction efficiency.

Utility model content

Aiming at the defects in the prior art, the purpose of this utility model is to provide a special hoisting tool for hoisting reflector units of radio telescopes, which can meet the hoisting needs of reflector units of different sizes and improve construction efficiency.

The utility model provides a special hoisting tool for hoisting the reflector unit of a radio telescope, which includes a hanger, the hanger includes a connection plate and three booms located in the same plane, and one end of each boom is connected to the connection plate. end, the angle between two adjacent booms is equal;

Each boom is provided with a position-adjustable guide pulley, and two of the three booms are respectively fixed with a remote control hoist at the connection ends; the special spreader also includes three steel wire ropes, each steel wire rope One guide pulley corresponds; one end of two of the three wire ropes is connected to a remote control winch, the other end bypasses the corresponding guide pulley, one end of the remaining wire rope is connected to the hanger, and the other end bypasses the corresponding guide pulley. Each wire rope is tied with a universal hanging claw, and each universal hanging claw is suspended below the corresponding guide pulley;

Each of the booms is fixed with a lifting lug for lifting the hanger, and the distance between each lifting lug and the center of the connecting plate is equal; the boom is a box beam, and the lifting lug is located at the center of the boom The upper flange, the guide pulley is located on the lower flange of the boom.

On the basis of the above technical solution, the universal hanging claw includes two vertical supporting pieces, a sheave for tying a wire rope is arranged between the upper parts of the two supporting pieces, and a rotatable beam runs through the lower parts. , there is a rotatable handle seat vertically interspersed in the middle of the beam;

The grip seat includes a top wall and two side walls, and there are two-lobed hollow grippers arranged between the two side walls. The two-petal grippers can be opened and closed between the two side walls; A first mandrel, a screw is interspersed between the two first mandrels, the screw cooperates with the positive thread of one first mandrel, and cooperates with the reverse thread of the other first mandrel, and the two ends of the screw are respectively Secure a locking handwheel.

On the basis of the above technical solution, each gripper is hinged to the gripper seat through a second mandrel.

On the basis of the above technical solution, two adjacent booms are connected by a reinforcing rod.

On the basis of the above technical solution, the special spreader also includes a remote controller, and the remote controller is wirelessly connected to the remote control winch.

Compared with the prior art, the utility model has the advantages of:

(1) Each boom of the utility model is provided with a position-adjustable guide pulley. One end of the two steel wire ropes is connected with the remote hoist, the other end bypasses the guide pulley, and one end of the remaining steel wire rope is directly connected to the hanger. Connected, the other end bypasses the guide pulley, each steel wire rope is tied with a universal hanging claw, and each universal hanging claw is suspended below the corresponding guide pulley. Since the position of the guide pulley on the boom is adjustable, that is, the position of the universal hanging claw suspended under the corresponding guiding pulley is adjustable, and the hanging claw is flexibly connected by a steel wire rope, so this special spreader can adapt to reflective surface units of different sizes When hoisting reflecting surface units of different sizes, there is no need to frequently replace the lifting gear, so the construction efficiency can be effectively improved.

(2) The connecting ends of the two booms of the present utility model respectively fix a remote control winch, and the heights of the corresponding two universal hanging claws are respectively adjusted by the two remote control winches, so that the hoisting reflector unit can be adjusted to any The posture meets the hoisting requirements, and the construction efficiency is high, while avoiding the waste caused by setting up three remote control winches.

(3) A rotatable handle seat is vertically interspersed on the beam of the universal hanging claw of the utility model, and the beam and the handle seat of the universal hanging claw can be rotated to realize the vertical force between the steel wire rope and the universal hanging claw , to avoid additional bending moment on the reflective surface unit of the grid type, and to control the deformation of the reflective surface unit caused by the additional force generated by hoisting to the reflective surface to be less than 0.2mm, which meets the requirements of the hanging claw.

(4) A first mandrel is vertically interspersed in the middle part of each flap gripper of the present utility model, and a screw rod is interspersed between the two first mandrels, and the screw rod cooperates with positive threads of one of the first mandrel shafts, and the screw rod Cooperate with the reverse thread of the other first mandrel, and fix a locking handwheel at both ends of the screw. When the worker rotates the screw forward through the locking handwheel, the first mandrel that cooperates with the positive thread of the screw moves along the screw. The position of the first mandrel of the reverse thread of the screw remains unchanged, and the distance between the two first mandrels changes, so as to realize the opening and closing of the two-lobed grippers. The operation is simple, and the universal lifting claw and the reflective surface unit can be easily realized. Fitting and unclamping between nodes.

Description of drawings

Fig. 1 is the structural schematic diagram of the special-purpose hanger that is used for hoisting the reflector unit of the radio telescope in the utility model embodiment;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is a structural schematic diagram of the universal hanging claw in the embodiment of the utility model.

Reference signs: 1-hanger, 1a-connecting plate, 1b-hanging arm, 1c-reinforcing rod, 1d-hanging lug; 2-guide pulley; 3-remote control winch; 4-universal hanging claw, 4a-support piece , 4b-rope wheel, 4c-beam, 4d-handle seat, 4e-second mandrel, 4f-handle, 4g-locking handwheel, 4h-first mandrel, 4i-screw; 5-wire rope; 6- Fixing plate.

detailed description

Embodiments of the utility model will be described in further detail below in conjunction with the accompanying drawings.

Referring to Fig. 1 and shown in Fig. 2, the utility model embodiment provides a kind of special hoisting tool for hoisting the reflector unit of the radio telescope, including hanger 1, remote controller, 3 universal hanging claws 4, 3 wire ropes 5 And 2 remote control winches 3, the remote controller and the remote control winches 3 are all wirelessly connected.

As shown in Figure 2, the hanger 1 is the main load-bearing structure, the hanger 1 includes a connection plate 1a and three booms 1b located in the same plane, and the end of each boom 1b and the connection plate 1a bolted is the connection end, The included angles between two adjacent booms 1b are equal, and they are connected by reinforcing rods 1c. Each boom 1b is fixed with a lug 1d for hoisting the hanger 1, and the distance between each lug 1d and the center of the connection plate 1a is equal.

Referring to Fig. 1 and Fig. 2, each boom 1b is provided with a position-adjustable guide pulley 2, and two of the three booms 1b are respectively fixed with a remote control winch 3 at the connecting ends, and the third one One end of the boom 1b close to the connection plate 1a is fixed with a fixed plate 6 . Each steel wire rope 5 corresponds to a guide pulley 2, and one end of two of the three steel wire ropes 5 is respectively connected with a remote control hoist 3, and the other end bypasses the corresponding guide pulley 2, and one end of the remaining steel wire rope 5 is connected to the hanger 1 Connected, the other end walks around the corresponding guide pulley 2, and each steel wire rope 5 is all tied with a universal hanging claw 4, and each universal hanging claw 4 is suspended below the corresponding guiding pulley 2.

Referring to Figures 1 and 2, in practical applications, the boom 1b is a box girder, the lifting lug 1d is located on the upper flange of the boom 1b; the guide pulley 2 is located on the lower flange of the boom 1b, and the specific installation method is : The lower flange of the boom 1b fixes a position-adjustable pulley seat through bolts, and a guide pulley 2 is erected on each pulley seat. When the bolts on the pulley seat are loosened, the pulley seat is moved along the lower flange of the boom 1b , and then tighten the bolts to realize the position adjustment of the guide pulley 2.

Referring to Fig. 3, the universal hanging claw 4 includes two vertically arranged support pieces 4a, a sheave 4b for tying a steel wire rope 5 is arranged between the upper parts of the two support pieces 4a, and a rotatable pulley runs through the lower parts of the two support pieces 4a. The beam 4c is vertically interspersed with a rotatable handle seat 4d in the middle of the beam 4c. The handle seat 4d includes a top wall and two side walls, and a handle 4f with a two-valve hollow structure is arranged between the two side walls, and the two-valve handle 4f can be opened and closed between the two side walls: each flap 4f passes A second mandrel 4e is hinged with the grip seat 4d, and a first mandrel 4h is vertically interspersed in the middle of each petal gripper 4f, and a screw rod 4i is interspersed between the two first mandrels 4h, and the screw rod 4i and One first mandrel 4h is positively threaded, and the other first mandrel 4h is reversely threaded, and a locking handwheel 4g is respectively fixed at both ends of the screw rod 4i. Wire rope 5 is connected with sheave 4b by wire rope clamp, and crossbeam 4c and grip seat 4d all can be rotated, realizes the vertical stress between wire rope 5 and universal lifting claw 4, avoids the additional bending moment that produces because of hoisting.

The embodiment of the utility model also provides a hoisting method of a radio telescope reflector unit based on a special sling, comprising the following steps:

S1, respectively adjust the position of each guide pulley 2 of the special-purpose spreader on the boom 1b, so that the three guide pulleys 2 correspond to the three nodes of the reflector unit to be hoisted;

S2. Use a tower crane to hoist the special spreader, adjust the heights of the two universal hanging claws 4 through the remote control winch 3, so that the heights of the three universal hanging claws 4 are equal, and the universal hanging claws 4 and the reflective surface unit The three nodes of each correspond one by one, and each universal hanging claw 4 is clamped together with the corresponding node of the reflector unit;

S3. Use the tower crane to lift the special spreader connected to the reflector unit, and transfer the reflector unit to the transfer locomotive hook through the special transfer hook and the manual lifting hook;

S4. The transshipment locomotive carries the reflecting surface unit and runs on the ring beam to the vicinity of the installed cable crane, and transfers the special spreader to the cable crane hook through the special transfer hook and the manual lifting hook;

S5. Use the remote control hoist on the cable to adjust the height of the reflector unit, so that the three nodes of the reflector unit coincide with their corresponding installation points, and fix the three nodes of the reflector unit in turn;

S6. Loosen all the universal hanging claws 4 sequentially, use the remote control hoist and traction system on the cable crane to retract the special spreader to the cable hanger platform, and then use the special transfer hook and manual lifting hook to remove the special spreader. The spreader is transferred to the hook of the transfer locomotive;

S7. The transfer locomotive carries the empty special spreader back to the tower crane position, and then transfers the special spreader to the tower crane hook through the special transfer hook and the manual lifting hook to complete the hoisting of the reflector unit.

In S6, the process of using the remote control hoist on the cable hoist and the traction system to retract the special spreader to the cable crane platform is as follows: each universal lifting claw 4 is connected to a nylon rope, and the nylon rope is first pulled to make all the universal lifting claws 4 Move the hanging claws 4 away from the reflecting surface unit, then raise the corresponding universal hanging claws 4 to a safe height through the remote control winch 3, loosen the nylon rope on the universal hanging claws 4 connected to the remote control hoisting machine 3, and finally use the traction system to pull the The special spreader is retracted to the cable suspension platform.

The utility model is not limited to the above-mentioned embodiments. For those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made. within the scope of the new protection. The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (5)

1. one kind for lifting the special hanger of radio telescope reflecting surface unit, comprise suspension bracket (1), suspension bracket (1) comprises terminal pad (1a) and is positioned at three arms (1b) of same plane, the fixing one end of every root arm (1b) and terminal pad (1a) is coupling end, and the angle between adjacent two arms (1b) is equal; It is characterized in that:

Described every root arm (1b) is provided with the adjustable leading sheave (2) in a position, the connecting end portion of two in three arms (1b) is respectively fixed with a remote control winch (3); Described special hanger also comprises three steel ropes (5), and every root steel rope (5) is corresponding with a leading sheave (2); One end of two in three steel ropes (5) is respectively connected with a remote control winch (3), the other end walks around corresponding leading sheave (2), one end of residue steel cable (5) is connected with suspension bracket (1), the other end walks around corresponding leading sheave (2), every root steel rope (5) is all have universally to hang pawl (4), eachly universally hangs the below that pawl (4) hangs on corresponding leading sheave (2);

Described every root arm (1b) is all fixed with one for lifting by crane the hanger (1d) of suspension bracket (1), the distance between each hanger (1d) with terminal pad (1a) center is equal; Described arm (1b) is box beam, and described hanger (1d) is positioned at the top flange of arm (1b), and described leading sheave (2) is positioned at the lower flange of arm (1b).

2. as claimed in claim 1 for lifting the special hanger of radio telescope reflecting surface unit, it is characterized in that: the described universal pawl (4) that hangs comprises the supporting blade (4a) that two panels vertically arranges, the rope sheave (4b) for being steel rope (5) is provided with between the top of two panels supporting blade (4a), run through between bottom and have rotating crossbeam (4c), the middle part of crossbeam (4c) is vertically interspersed with a rotating handgrip seat (4d);

Handgrip seat (4d) comprises roof and two side, is provided with the handgrip (4f) of two lobe hollow structures between two side, and two lobe handgrips (4f) can folding between two side; Middle part all vertically interspersed first mandrel (4h) of every lobe handgrip (4f), a screw rod (4i) is interspersed with between two first mandrels (4h), screw rod (4i) coordinates with the first mandrel (4h) plus thread, coordinate with another root first mandrel (4h) minus thread, the two ends of described screw rod (4i) are each fixes a locking handwheel (4g).

3. as claimed in claim 2 for lifting the special hanger of radio telescope reflecting surface unit, it is characterized in that: every lobe handgrip (4f) is all hinged by second mandrel (4e) and handgrip seat (4d).

4. as claimed in claim 1 for lifting the special hanger of radio telescope reflecting surface unit, it is characterized in that: connected by reinforcing rod (1c) between adjacent two arms (1b).

5. as claimed in claim 1 for lifting the special hanger of radio telescope reflecting surface unit, it is characterized in that: described special hanger also comprises remote controller, remote controller and remote control winch (3) wireless connections.